Project1_Layout 1 07/05/CLADDING & SHEETING The perils of cut edge corrosion Henry Greensmith, development director at HSFM, discusses cut edge corrosion and the measures that you can take to identify it Triggered by the cut edge of a metal sheet being insufficiently coated during the manufacturing stage, any untreated metal edge exposed to the elements is vulnerable to cut edge corrosion. The process is accelerated by water being retained within the laps and joints of a roof’s structure, with the potential for oxidation (rusting) to also occur. Identifying cut edge corrosion Keep an eye out for blisters, cracks and discolouration on your roof, with extra monitoring around the laps and joints of t he structure. Early identification of the problem is key when it comes to cut edge corrosion, as if left untreated, it can quickly progress further into the metal and cause more than a cosmetic problem for your roof – including leaks and brittle sheets, which can affect the integrity of your building. Lack of identification and treatment can even lead to a complete re-roof in the worst cases. As a specialist in the roofing industry, we would recommend including an annual roof survey 038 FEBRUARY 2018 RCIMAG.COM within your planned preventive maintenance. Early treatment will not only save you money in the long run, but it will also prolong the life of your cladding and prevent potentially lengthy disruptions to your business, should cut edge corrosion be left to fester for long periods. The first step in treating it is to inspect the damage and determine the level of repairs required. As metal guttering can also be a contributing factor, gutters will need to be assessed, as if poorly fitted they will only further aggravate the corrosion to your roof sheets. Following inspections, the entire area will require a thorough clean to remove both rust and dirt, enabling waterproof sealants to be laid effectively. Further protective layers of sealant should then be applied to allow for increased protection – most waterproofing treatments carry a manufacturer supported warranty of 10 to 20 years. It is important to bear in mind that if cut edge corrosion is left untreated for long periods of time and the damage is extremely severe, preventative measures may not be suitable and the removal of the entire metal sheet may be required. Depending on the severity of your cut edge corrosion, the cost and length of time to repair it can differ – further promoting the need to identify and address it, as early as possible. HSFM’s specialist team offers a flexible, adaptable and cost-effective approach to fabric maintenance, roofing, asbestos, compliance and asset management and is ready to help you. www.hsfm.com “Lack of identification and treatment can even lead to a complete re-roof in the worst cases” A bespoke fabricated service Specialising in high quality fabrication and facades solutions, Central Fabrications & Facades offers a bespoke service to suit each architectural requirement of a project. RCI visited the company to find out more Despite having only been around since 2009, Central Fabrications & Facades, based in the West Midlands, has gained an impressive client base in that time, supplying bespoke fabrication solutions to customers throughout the UK (see pictures). With a comprehensive range of materials and finishes in stock, along with the use of modern production methods and advanced automated machinery, the company prides itself on adapting and evolving to the needs of the industry. “Our team is here to help ensure our products meet or exceed project expectations,” said Mick Chawner, general manager at Central Fabrications & Facades. “We take pride in our ability to fabricate even the most complicated project, and offer our customers a tailored service to suit each architectural requirement, complete with our own in-house design team.” Employing over 60 people in its factory, Central Fabrications’ workforce is highly skilled and experienced to cope with the diverse range of products and services it produces for the building industry. This includes rainscreen and panel systems; gutter systems and ancillary products; louvre and sunshade systems; profiled systems, powder coating; and laser cutting. Supplying its products for a number of projects, the company’s 55,000 ft2 factory houses many automated machines, including a Mitsubishi eX3015 fitted with a 4.5kw laser, which can process products up to 25mm in mild steel, and a flat bed routing technology system, which can process board products, including ACM up to 6,000mm x 2,000mm. Central Fabrications also claims to have one of the largest capacity industrial powder coating plants in the industry. With its in-line pretreatment West Bromwich Leisure Centre facility and automated spray booth, the line is capable of handling items 6,000mm long x 1,500mm wide, to a depth of 1.900mm. From a performance point of view, the company is in a strong position, according to Mick, who concluded: “Over the years we have grown the business considerably, and have increased our market share. Looking to the future, we will continue to be a single source of supply for contractors, offering them greater scope in material choice and technical know-how to ensure that we provide them with a quality service.” www.centralfabs.co.uk 10 tonnes of aluminium box section extruded with port holes was fitted at Minster Court.
RCI Feb 2018
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